JPH0998331A - Camera control system - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To facilitate an operation of selecting a camera to be controlled from a plurality of registered cameras. SOLUTION: When an expansion button 128 adjacent to a camera name display field 126 of a camera operation interface 60 is pressed, each communication terminal is inquired as to whether or not the camera connected to each is in a controllable state. In accordance with the inquiry result, the names of the cameras that are currently in the controllable state are collected for display and displayed as a pull-down menu 130. Or, as a pull-down menu that displays candidates for the controlled camera,
The names of the cameras in the uncontrollable state are displayed in gray, the cameras in the controllable state are displayed in normal density, and the cameras in the gray display are disabled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera control system, and more particularly to a camera control system for selecting an arbitrary camera from a plurality of cameras and remotely controlling the selected camera.

[0002]

2. Description of the Related Art In a video communication conference system, a video camera is connected to each communication terminal device, and the input video is mutually transmitted via a communication line. Each user has a conversation while watching an image from a communication partner displayed on the monitor screen of his or her communication terminal device and, if necessary, a material graphic or the like. It is also possible to exchange data with each other. Normally, the video camera connected to each communication terminal device is configured to externally control pan, tilt, and zoom, and each communication terminal device communicates with the video camera connected to the communication terminal device of the communication partner. It can be operated remotely via a line. On the monitor screen, a camera operation interface for operating the video cameras of the partner terminal and the self terminal is displayed, and the user or the operator arbitrarily selects various graphical elements of the camera operation interface and a pointing device such as a mouse. By selecting and operating with, the pan, tilt, zoom, etc. of the desired camera can be operated.

FIG. 13 shows a conventional camera operation interface. This camera operation interface 310
Is a left pan operation button 312 for instructing left pan and a right pan operation button 31 for instructing right pan as camera operations.
4, up tilt operation button 3 for instructing tilt up
16, a downward tilt operation button 318 for instructing a downward tilt, a home position button 320 for instructing a return to a reference direction (usually the front), a tele button 322 for instructing a zoom in a tele direction, and a wide angle. A wide button 324 for instructing a zoom in a direction is provided.

The interface 310 further comprises a camera name display field 326 for displaying the name of the camera to be controlled.
By pressing the expansion button 328, as shown in FIG.
A list of all camera names that can be controlled is displayed as a pull-down menu 330 below the camera name display field 326. The camera name displayed in the camera name display field 326 is the camera name displayed at the top of the pull-down menu 330. 332 is a pull-down menu 33
This is a registration button operated when a new camera to be controlled is to be registered at 0.

When the user clicks the mouse button on the registration button 332, the registration window 334 shown in FIG. 15 is accordingly displayed on the monitor screen. The registration window 334 includes a camera name input field 336, an IP address input field 338 for inputting an IP address that is a network logical address, and a camera number input field 340. In the camera name input field 336, the camera name (Computer1 in FIG. 15) desired to be added to the control target is input in a character string that is easy for the user to understand. In the IP address input field 338, the IP address of the computer network of the communication terminal device to which the camera to be added is connected is input. In the camera number input field 340, the IP
From the cameras connected to the communication terminal specified by the address, enter the number of the camera you want to add to the control target.

In the camera name display field 326 and the pull-down menu 330, the camera name input in the camera name input field 336 is displayed. The camera identified by the camera name currently displayed in the camera name display field 326 is the camera currently controlled. In the pull-down menu 330, as shown in FIG. 14, the camera names of all registered cameras are displayed in a list in a fixed order such as the registration order or the reverse order of registration.

[0007]

As described above, in the conventional example, the pull-down menu 330 displayed when selecting a camera to be controlled displays a list of all registered camera names. In this method, communication terminals or cameras that are not currently operating are also displayed in a list, and it is difficult to select if there are many registered cameras.

Although the conventional example of the video communication conference system has been described, such a disadvantage is caused by the control device arranged at the central monitoring center in the video monitoring system using a large number of video cameras. The same can occur when selecting and operating the camera.

It is an object of the present invention to provide a camera control system that eliminates such inconvenience.

[0010]

According to the present invention, controllable determination means for confirming whether each camera is in a controllable state is provided, and only the camera in the controllable state is controlled according to the determination result. Displayed as a list of target candidates. As a result, only the cameras that can be actually selected are displayed as a list of candidates for the control target, so that the target camera can be quickly selected.

Further, the camera in the controllable state and the camera in the uncontrollable state are displayed in different modes so that only the camera in the controllable state can be selected. With this, you can quickly find a camera that you can actually select,
You can select the desired camera and at the same time see which camera is out of control.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

An embodiment of the present invention in the video communication conference system will be described. 1 is a schematic configuration block diagram of a communication terminal device, FIG. 2 is a network connection configuration diagram, and FIG. 3 is an example of a monitor screen.

The configuration of the terminal device shown in FIG. 1 will be described. 1
0 is a CPU that controls the whole, 12 is a RAM, 14 is an OS
A ROM for storing a program for loading (operating system) into the RAM 12, other programs and fixed data, 16 is an image compression / expansion circuit for compressing and expanding image data, and 18 is to be displayed on the display monitor 20. Video memories that store image data, which can transfer data to each other via a memory bus 22.

The memory bus 22 has an I / O bus 2
4, a keyboard 26, a mouse 28, an external storage device (such as a hard disk) 30, a video input device 34 for connecting a video camera 32, and a voice input device for connecting a microphone 36 to the I / O bus 24. 38, an audio output device 42 for supplying an audio signal to the speaker 40, a camera control circuit 44 for controlling pan, tilt, zoom and the like of the video camera 32, and a network transmission / reception device 48 connected to the network 46.

The video input device 34 converts the analog video signal output from the video camera 32 into a digital signal and stores it in the internal RAM. The voice input device 38 also
The analog voice signal from the microphone 36 is converted into a digital signal and stored in the internal RAM. The CPU 10 can access the video data stored in the RAM of the video input device 34 and the audio data stored in the RAM of the audio input device 38 via the memory bus 22 and the I / O bus 24. The audio output device 42 includes a RAM for temporarily storing the audio data from the I / O bus 24, and the audio data stored in the RAM is sequentially converted into an analog signal and output to the speaker 40.

A plurality of terminal devices 50, 5 having the configuration shown in FIG.
2, 54 and 56 are connected to the network 46 as shown in FIG. 2 so that they can communicate video, voice and data with each other to construct a video communication conference system.
The network 46 is Ethernet (trademark) in this embodiment.
However, the present invention is not limited to such a particular network. In this embodiment, one video terminal is provided for each of the four communication terminals.
A camera is connected and a video communication conference can be held among the four parties.

FIG. 3 shows an example of the screen of the monitor 20. 60
Is a camera operation interface, and FIG.
It is the same as the conventional example illustrated in FIG. 1, and includes operation buttons for shooting direction and magnification, and a camera name display field for displaying the control target, and can display a pull-down menu for selecting the control target. 62, 64, 66, 68 are usually communication terminals 50, 52, which construct a video communication conference system.
54 is a video display window for displaying a captured image of the video camera 32 connected to 54 and 56. One of the video display windows, for example, the video display window 62 displays the captured image of the video camera 32 of its own terminal. In the present embodiment, a communication conference among a maximum of four persons as shown in FIG. 2 is assumed, so four video display windows 62, 6 are provided.
4, 66, 68 can be set.

Video display windows 62, 64, 66, 6
8 can also be used to replay and display recorded video or the like stored in the corresponding communication terminal device. Therefore, below each video display window 62, 64, 66, 68,
Buttons for controlling playback (rewind button 70, playback start button 72, fast forward button 74, playback stop button 76)
And switch button 7 to switch between recorded video and current video
8 are arranged. Needless to say, as long as the monitor 20 has a sufficient screen, a video display window can be further set and arbitrary current video and recorded video can be displayed. As is well known, the user can input a desired instruction to the CPU 10 by freely moving the mouse cursor 80 with the mouse 28 and performing a predetermined operation on the camera operation interface 60 and various buttons 70 to 78. .

Network 120 for video and audio data
The basic operation of transmission through the will be described. Video input device 3
Reference numeral 4 converts the analog video signal output from the video camera 32 into a digital signal and expands it in the built-in RAM. The CPU 10 reads the video data from the RAM in the video input device 34, expands it in the RAM 12, packetizes the data, and outputs it from the network transmission / reception device 48 to the network 46. The packet is transferred from the other terminal device, for example, the terminal device 50 to the terminal devices 52, 54 and 56 via the network 46.

When the network transmission / reception device 48 senses that a packet has arrived from the network 46, the network transmission / reception device 48 expands the packet in the internal RAM and notifies the CPU 10 of the reception of the packet. The CPU 10 reads data from the RAM in the network transmission / reception device 48 and
Expand to 12. Then, the CPU 10 takes out the video data included in the packet and writes the video data in a predetermined position of the VRAM 18. For example, the video is displayed in the video display window 6
When it should be displayed on the screen No. 4, it is written in the address of the VRAM 18 corresponding to the video display window 64. This allows
Images from other communication terminal devices are displayed in the image display windows 62 to 68 assigned to them.

The sound input from the microphone 36 is
Converted to a digital signal by the voice input device 38,
It is expanded in the internal RAM. The CPU 10 reads the voice data from the RAM in the voice input device 38, and the RAM 1
2 and packetizes the data to output to the network transmission / reception device 48. The packet is transferred from the other terminal device, for example, the terminal device 50 to the terminal devices 52, 54 and 56 via the network 46.

When the network transmission / reception device 48 senses that a packet has arrived from the network 46, the network transmission / reception device 48 expands the packet in the internal RAM and notifies the CPU 10 of the reception of the packet. The CPU 10 reads the data from the RAM in the network transmission / reception device 48 and writes it in the built-in RAM of the audio output device 42. Audio output device 42
Converts the audio data stored in the internal RAM into an analog signal and outputs the analog signal to the speaker 40. As a result, voice is output from the other one or more communication terminal devices.

The CPU 10 also generates a camera control command according to the operation contents in response to the operation of the button on the camera operation interface 60 by the mouse 28, and designates the camera to be operated and the terminal device connected to this camera. Then, the camera control command is packetized and output from the network transmission / reception device 48 to the network 46. The designated terminal device takes in a packet containing the camera control command from the network 46, and when it confirms that the packet contains the camera control command, it transfers the camera control command to the camera control circuit 44. Of course, if the camera to be controlled is a camera connected to its own terminal, the CPU 10 supplies the control command to the camera control circuit 44. Camera control circuit 4
Reference numeral 4 controls pan, tilt, zoom and the like of the video camera 32 according to the input camera control command. In this way, not only the video camera connected to the own terminal device, but also the video camera connected to another terminal device,
It can be operated via the network 46.

By such a basic operation, a video / audio communication conference can be held among four persons, and a video camera connected to another terminal can be operated remotely.

Next, the camera operation interface 60 will be described in detail with reference to FIG. Note that here, the five cameras computer1, computer2, c
computer3, computer4, and comp
uter5 is registered. Among them, at this time,
Cameras computer1, computer2 and c
The computer 4 can be selected as a control target,
The cameras computer3 and computer5 are
It is assumed that it is in a state where it cannot be selected as a control target at the present time because it is controlled by another user or the power is not turned on.

FIG. 4 shows a camera operation interface 60.
The detailed configuration of is shown. As mentioned earlier,
This is exactly the same as the conventional example shown in FIG. 13, but the method of displaying the list of camera names in the pull-down menu for selecting the camera to be operated is different. For camera operation,
Left pan operation button 112, right pan operation button 114, upper tilt operation button 116, lower tilt operation button 118,
Home position button 120, tele button 122
And a wide button 124, and a camera name display field 126 for displaying the name of the camera to be controlled.

By pressing the expansion button 128 adjacent to the camera name display field 126, as shown in FIG. 5, the name of the camera that can be controlled (that is, the camera in the controllable state at the present time) is displayed. List is camera name display field 12
It is displayed as a pull-down menu 130 at the bottom of 6. Based on the above assumption, 5 camera computers
1, computer2, computer3, com
Among the computer 4 and computer 5, the cameras computer 1, computer 2 and computer 4 can be selected as control targets at the present time, but the computer 3 and computer 5 are controlled by another user or are not turned on. Since it is in a state where it cannot be selected as a control target at this moment, the pull-down menu 130 displays the camera computers 1, c as shown in FIG.
A list of computer2 and computer4 is displayed.

When the user clicks the mouse button on the registration button 132, the registration window 334 shown in FIG. 15 is accordingly displayed on the monitor screen, and the camera name of the camera to be added to the control target and the terminal device to be connected. To IP
You can enter the address and camera number.

The operation of the camera operation program for managing the camera operation interface 60 will be described in detail below. If one or more cameras are already registered as control targets, the registration file is loaded and the number of cameras and the camera name are set in predetermined variables. A case where a camera name or the like is newly registered will be described.

When the camera operation program is activated, first, the initialization routine shown in FIG. 6 is executed, and the variable num is set.
0 is substituted into _camera. Variable num_cam
era is a video camera currently in control,
That is, it is a global variable indicating the total number of controllable cameras.

When the registration button 132 is clicked, the input data is set in a predetermined variable according to the flowchart shown in FIG. That is, the local variable i is
The value of num_camera is substituted (S1). Figure 6
At this point, the num_camera is initialized by the initialization shown in
Has a value of 0. Next, the registration window shown in FIG. 15 is displayed, and the camera name, the network address (IP address) of the communication terminal device to which the video camera is connected, and the number of the camera at the communication terminal are input. You are prompted (S2). This is because the camera number is input when a plurality of video cameras are connected to one communication terminal device. In this embodiment, only one video camera is connected to one communication terminal device.

After the input, the camera name is the array variable ca.
mera [i]. The network address is the array variable camera [i] .name. In the address, the camera number is the array variable camera [i]. number
Each is substituted (S3). Set the value of local variable i to 1
Increase (S4), assign the value of variable i to num_camera (S5), and end. camera []. na
me is used as a pull-down menu entry and is listed.

When the mouse button is clicked on the expansion button 128 of the camera operation interface 60,
According to the flowcharts shown in FIGS. 8 and 9, the pull-down menu 130 is displayed, and information such as the camera name according to the user's selection is set in a predetermined variable. Note that FIG. 9 shows the details of S13 of FIG.

In this embodiment, the pull-down menu 13
When 0 is displayed, whether communication can be performed to each communication terminal to which the registered video camera is connected,
Also, it is inquired whether or not the connected video camera is controllable, and the camera name and registration number of the controllable video camera are substituted into the structure pdmenu_entry [] for the pull-down menu 130 (S1).
3 to S17). This causes the pull-down menu 130 to display only the video cameras that are currently controllable. .

First, the local variable max is set to num_ca.
Substituting mera (S11) and substituting 0 for loop variable i and local variable j (S12). Variable num_cam
era indicates the number of registered video cameras.

Camera [i]. name video
Camera to the communication terminal to which the camera is connected
[I]. Inquire whether the name video camera is currently available (ie, controllable) (S1).
3). If it cannot be used (S13), i is incremented (S16), and it is checked whether i exceeds the number of registered video cameras (S17). If i is not exceeded (S17), the process returns to S13.

Camera [i]. name video
If the camera is available (S13), the structure variable p for creating the entry of the pull-down menu 130
dmenu_entry [j]. The camera name c in name
amera [i]. Substitute name for i as pdmen
u_entry [j]. Substitute for no (S14). Then, j and i are incremented (S15, S16),
It is checked whether i exceeds the number of registered video cameras (S17). If i has not been exceeded, the process returns to S13.

If i exceeds max (S17), all registered video cameras have been checked. The value of j is substituted for the variable pd_menu_entry_max indicating the number of video cameras displayed in the pull-down menu 130 (S18), and the pull-down menu 130 is displayed (S19).

In the conventional example, as shown in FIG. 14, all registered video camera names are displayed, but in the present embodiment, each registered video camera can be used (that is, control target If it cannot be used, the variable pdmenu_entry [i].
Do not register with name. Therefore, in the present embodiment, as shown in FIG. 5, the unusable camera (in this case, the com
putter3, computer5) is a pull-down
It is not displayed in the menu 130.

FIG. 9 shows a detailed flowchart of S13 of FIG. First, it is checked whether the network function of the corresponding communication terminal (IP address is camera [i] .address) is activated (S21). This is the ICMP normally used in TCP / IP.
It can be performed by the echo and ICMP echo replay protocols. ICMP echo c
amera [i]. IC after sending to address
Wait for a reply of MP echo reply for a predetermined time. Of course, even if such a protocol is not used, a packet requesting a reply may be created and transmitted, and a reply packet corresponding thereto may be waited.

If there is no reply within the time (S21),
It is assumed that the network of the communication terminal is not activated, and the answer to the inquiry is N, S16 (FIG. 8).
Proceed to.

If the network of the communication terminal of the other party is activated (S21), the camera number camera [i].
A packet inquiring whether or not the video camera corresponding to the number is controllable is generated (S22), and the packet is transmitted to the communication terminal to which the corresponding video camera is connected (S23), Wait for a reply packet from the communication partner (S24).

If a time-out occurs before receiving the reply packet (S25), the answer to the inquiry becomes N, and the process proceeds to S16 (FIG. 8). Even if a reply packet is received before the time-out, if the data indicates that the corresponding video camera is not in the controllable state, the answer to the inquiry is N, and similarly, S
16 (FIG. 8).

Receive a reply packet before timeout,
The answer to the inquiry is Y only when the data indicates that the corresponding video camera is in the controllable state, and the process proceeds to S14 (FIG. 8).

The operation of the communication terminal which has received the inquiry as to whether or not the camera can be controlled will be described with reference to FIG. When the inquiry packet as to whether the camera can be controlled is received, the video camera 3 is transmitted via the camera control circuit 44.
The control command to retrieve the information of 2 is the video camera 32
(S31). As a result, the camera control circuit 44
If an error is output (S32), the video camera 3
Since No. 2 cannot be controlled, a reply packet indicating that control is impossible is created (S36), and the packet is transmitted to the inquiry source (S37).

Waiting for the video camera information corresponding to the control command to be output from the video camera 32 via the camera control circuit 44 (S33), and when the time-out occurs (S34), the video camera 32 cannot be controlled again. This means that a reply packet indicating that control is impossible is created (S36), and the packet is transmitted to the inquiry source (S37).

If the information can be received without timing out (S34), a reply packet indicating controllable is created (S35), and the packet is transmitted to the inquiry source (S37).

With the above configuration, the pull-down menu 1 for selecting the video camera to be controlled
On video 30, only video cameras currently controllable are displayed, which simplifies the selection of video cameras.

In the above embodiment, only the controllable video cameras are displayed in the pull-down menu for selecting the video camera to be controlled, but the cameras not displayed are unregistered or happen to be uncontrollable at the moment. I can't tell what. This may lead to re-registration of cameras that currently happen to be out of control. The problem is that all the video camera names registered in the pull-down menu are displayed, but the currently controllable video camera and the uncontrollable video camera are displayed in different ways, and the uncontrollable video camera is displayed.・ Can be solved by making the camera unselectable. The contents of the modified example will be specifically described below.

Configuration of communication terminal device (FIG. 1), monitor 20
The screen example (FIG. 3) and the camera operation interface (FIG. 4) are the same as those in the above-described embodiment.

FIG. 11 shows a pull-down menu 14 which replaces the pull-down menu 130 in the above-described embodiment.
A display example of 0 is shown. In the modified example, the camera name display field 126
11 by pressing the expansion button 128 adjacent to FIG.
A pull-down menu 140 as shown in is displayed. In the pull-down menu 140, all registered video / camera names are displayed. Among them, video / camera names that cannot be selected as control targets at present are displayed in gray and cannot be selected as control targets. As in the case of FIG. 4, the cameras computer1 and computer are
r2 and computer4 can be selected as control targets, but cameras computer3 and computer
If 5 cannot be selected as a control target, the camera co
computer3 and computer5 are displayed in gray.

To implement the pull-down menu 140, the flow chart shown in FIG. 8 may be modified as shown in FIG. Structure pdm for pull-down menu
A variable pdmenu_entry that indicates whether to thinly display and selectable in enu_entry []
[]. Add a grayout. Variable pdmenu_
entry []. When grayout is 0, it means that selection is not possible in gray display, and when it is 1, it means that selection is possible in normal display.

When the mouse button is clicked on the expansion button 128 of the camera operation interface 60,
First, local variables max and pd_menu_ent
num_camera is substituted into ry_max (S4
1, S42) and 0 is assigned to the loop variable i (S4
3).

Structure variable pdmenu_entry for creating pull-down menu 140 entries
[I]. The camera name camera [i]. na
me is substituted, i is pdmenu_entry
[I]. It is substituted for no (S44).

Camera [i]. name video
Camera to the communication terminal to which the camera is connected
[I]. It is inquired whether or not the name video camera can be used (S45). Details of S45 are the same as those in FIG. If it cannot be used (S45), the variable pdmen
u_entry [i]. If 1 is substituted for grayout (S47) and it can be used (S45), the variable pdme
nu_entry [i]. Substitute 0 for grayout (S46). Increment the variable i (S48),
It is checked whether i exceeds the maximum number of registered video cameras (S49), and if not (S49),
Return to S44.

If i exceeds max (S49), it means that all registered video cameras have been checked, so p
The pull-down menu 140 is displayed by dmenu_entry [] (S50).

With the above configuration, the pull-down menu for displaying the list of video cameras to be controlled cannot be selected at the present time (that is, cannot be controlled).
The video camera's camera name is dimmed and is not selectable, which simplifies the selection of the video camera. In addition, since the camera name that cannot be controlled at this time is also displayed, the user does not mistakenly register the camera and re-register it.

In this modified embodiment, the uncontrollable camera is displayed in a light color to distinguish it from other controllable cameras, but the present invention is not limited to this, and the color, font, style,
They may be displayed in different forms that can be distinguished from each other by the character size and / or the character decoration. The uncontrollable camera may be displayed blinking.

[0060]

As can be easily understood from the above description, according to the present invention, only the cameras in the controllable state are displayed as a list of candidates for the control target, so that the cameras that can be actually selected can be selected. Only the target will be displayed as a list of candidates for control, and the target camera can be quickly selected.

Further, the cameras in the controllable state and the cameras in the uncontrollable state are displayed in different modes, and only the cameras in the controllable state can be selected, so that the actual selection can be made. Not only can you quickly find a suitable camera and select the target camera, but you can also check which camera is out of control at the same time.

[Brief description of drawings]

FIG. 1 is a schematic block diagram of a communication terminal device according to an embodiment of the present invention.

FIG. 2 includes four communication terminals shown in FIG. 1 and a network 4
6 is a schematic configuration diagram of a video communication conference system connected to FIG.

FIG. 3 is an example of a monitor screen of this embodiment.

FIG. 4 shows a detailed configuration of a camera operation interface 60.

FIG. 5 is a display example of a pull-down menu 130.

FIG. 6 is a flowchart of an initialization routine of a camera operation program.

FIG. 7 is a flowchart of a camera registration routine.

FIG. 8 is a flowchart of camera selection.

9 is a detailed flowchart of S13 of FIG.

FIG. 10 is a flowchart for checking whether or not the camera connected to the own terminal can be controlled.

11 is a display example of a pull-down menu 140 instead of the pull-down menu 130. FIG.

FIG. 12 is a flowchart for realizing a pull-down menu 140.

FIG. 13 is a camera operation interface in a conventional example.

FIG. 14 is a pull-down menu in the conventional example.

FIG. 15 is an example of a camera registration window in a conventional example.

[Explanation of symbols]

 10: CPU 12: RAM 14: ROM 16: Image compression / expansion circuit 18: Video memory (VRAM) 20: Display monitor 22: Memory bus 24: I / O bus 26: Keyboard 28: Mouse 30: External storage device 32: video camera 34: video input device 36: microphone 38: audio input device 40: speaker 42: audio output device 44: camera control circuit 46: network 48: network transmission / reception device 50, 52, 54, 56: terminal device 60 : Camera operation interface 62, 64, 66, 68: Video display window 70: Rewind button 72: Playback start button 74: Fast forward button 76: Playback stop button 78: Change button 80: Mouse cursor 112: Left pan operation button 114 : Right pan operation button 116: Up Tilt operation button 118: down tilt operation button 120: home position button 122: tele button 124: wide button 126: camera name display field 128: expansion button 130: pull-down menu 132: registration button 140: pull-down menu

Claims (5)

[Claims] 1. A camera control system capable of controlling a plurality of cameras, wherein control is possible according to a controllable judgment means for judging whether or not each camera is in a controllable state, and a judgment result of the controllable judgment means. A camera control system comprising: a list display means for displaying only a list of cameras in a possible state, and selecting a camera to be controlled from a camera list displayed by the list display means. 2. The camera control system according to claim 1, further comprising notifying means for notifying a determination result of the controllable determination means. 3. A camera control system capable of controlling a plurality of cameras, wherein control is possible according to a controllable judgment means for judging whether or not each camera is in a controllable state, and a judgment result of the controllable judgment means. A list display means for displaying a list of the cameras in the enabled state and the cameras in the uncontrollable state in different modes is provided, and a camera to be controlled from the cameras in the controllable state displayed by the list display means. A camera control system characterized by selection. 4. According to the judgment result of the controllable judgment means,
The camera control system according to claim 3, wherein a camera in an uncontrollable state is made unselectable. 5. The camera control system according to claim 3, further comprising notifying means for notifying the determination result of the controllable determination means.